package com.sky.controller.user;

import com.sky.constant.StatusConstant;
import com.sky.entity.Dish;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.List;

import static com.sky.constant.RedisConstant.DISH_KEY;

@RestController("userDishController")
@RequestMapping("/user/dish")
@Slf4j
@Api(tags = "C端-菜品浏览接口")
public class DishController {
    @Autowired
    private DishService dishService;
    @Autowired
    RedisTemplate redisTemplate;

    /**
     * 根据分类id查询菜品
     *
     * @param categoryId
     * @return
     */
    @GetMapping("/list")
    @ApiOperation("根据分类id查询菜品")
    public Result<List<DishVO>> list(Long categoryId) {
        //1. 构建查询id
        String key=DISH_KEY+categoryId;
        //2. 从Redis中查询是否存在菜品数据，根据存入数据类型直接强转即可
        List<DishVO> dishVOList = (List<DishVO>) redisTemplate.opsForValue().get(key);
        //3. 不存在，查询数据库
        if (dishVOList==null||dishVOList.size()==0){
            //3.1 查询数据库
            Dish dish = new Dish();
            dish.setCategoryId(categoryId);
            dish.setStatus(StatusConstant.ENABLE);//查询起售中的菜品

            dishVOList = dishService.listWithFlavor(dish);
            //3.2 放入Redis缓存
            redisTemplate.opsForValue().set(key, dishVOList);
        }

        //返回数据
        return Result.success(dishVOList);
    }
}
